WBCS.LIVE practice question

Kartik started walking from a mall. First of all, he turned 8 towards the north direction. From there, he turned to the right and went 3 km. After that, he turned to the right and turned 5 km. After this he turned to the right and turned 7. What is the shortest distance from the mall to the last place of Kartik?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 7 km
  2. 3 km
  3. 5 km
  4. 10 km

Correct answer and explanation

Correct answer: 5 km

Explanation: āœ… Correct Answer: C) 5 km šŸ“š Explanation: Mapping the coordinate movements: 8 km North, 3 km East (right), 5 km South (right), and 7 km West (right). Kartik is now 3 km North and 4 km West of the start. This forms a right-angled triangle with sides of 3 km and 4 km. Using the Pythagorean theorem, the shortest distance to the mall is $\sqrt{3^2 + 4^2} = \sqrt{25} = 5\text{ km}$.